A 0.07 H inductor and a 12Ω resistor are connected in series to a 220 V , 50 Hz AC source. The approximate current in the circuit and the phase angle between current and source voltage are respectivel

Question

A 0.07 H inductor and a 12Ω resistor are connected in series to a 220 V , 50 Hz AC source. The approximate current in the circuit and the phase angle between current and source voltage are respectively. [Take π as ( 7 22 ​ ]

TestHub · Accepted Answer

ϕ = tan − 1 ( R X L ​ ​ ) X L ​ = ω L X L ​ = 2 × 7 22 ​ × 50 × 0.07 = 22Ω ϕ = tan − 1 ( 12 22 ​ ) R = 12Ω ϕ = tan − 1 ( 6 11 ​ ) Z = X L 2 ​ + R 2 ​ = 25.059 I = Z V ​ = 25.059 220 ​ = 8.77 A

Physics - EMI/AC Question with Solution | TestHub

Options:

Doubts & Discussion